There's someplace on 3FC that has a link to an article about BL - it has testimonials from past contestants, even winners or runners up I believe. A LOT of their weight loss is due to dehydration and it said that towards the end some of them pretty much lived off SF jello etc.
I knew they had to be doing something because those losses are unheard of etc. And for the average person - working out 6+ hours a day isn't feasible, not even close.
Anyways - all that said - I still like to watch too